关键词: 环己烯, 水合, 环己醇, 计算流体力学

Abstract: Cyclohexene direct hydration is a new process to prepare cyclohexanol. A VOF (volume of fluid) method is presented for predicting the flowing process of the two-phase countercurrent falling film. Three important momentum source terms，including interface shear stress，surface tension and porous medium source term，are considered. On the basis of using a CFD (computational fluid dynamics) model to simulate the influence of viscosity，surface tension and flow resistance，the results show that the viscosity and the surface tension have great influence on the thickness and the fluctuation of liquid film which further affect the mass transfer coefficient，and that high flow resistance will cause liquid membrane rupture which interferes with the mass transfer.

Key words: cyclohexene, hydration, cyclohexanol, computational fluid dynamics